| State | Utah |
|---|---|
| Name | Vishnu Schist and granitic intrusions |
| Geologic age | Precambrian |
| Lithologic constituents |
Major
Metamorphic > Schist > Amphibole-schist (Amphibolite)schist and gneiss, amphibolite to granulite
Minor
Igneous > Plutonic (Pluton, Dike or sill)
|
| Comments | from Grand Canyon area |
| References | Hintze, L.F., 1980, Geologic map of Utah: Utah Geological and Mineral Survey, scale 1:500,000.Hawkins, D.P., Bowring, S.A., Ilg, B.R., Karlstrom, K.E., and Williams, M.L., 1996, U-Pb geochronologic constraints on the Paleoproterozoic crustal evolution of the Upper Granite Gorge, Grand Canyon, Arizona: Geological Society of America Bulletin, v. 108, no. 9, p. 1167-1181. |
| NGMDB product | |
| Counties | Washington |